package com.itheima.reggie.config;

import com.itheima.reggie.common.JacksonObjectMapper;
import lombok.extern.slf4j.Slf4j;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;

import java.util.List;

@Slf4j
@Configuration
public class WebMvcConfig extends WebMvcConfigurationSupport {
//设置资源映射
    @Override
    protected void addResourceHandlers(ResourceHandlerRegistry registry) {
        log.info("开始进行静态资源映射");
       registry.addResourceHandler("/backend/**").addResourceLocations("classpath:/backend/");
       registry.addResourceHandler("/front/**").addResourceLocations("classpath:/front/");
    }

//扩展mvc框架的消息转换器


    @Override
    protected void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
        log.info("扩展消息转换器。。");
        MappingJackson2HttpMessageConverter mappingJackson2HttpMessageConverter =new MappingJackson2HttpMessageConverter();
        //设置对象转换器，底层使用jackson将java对象转为json
       mappingJackson2HttpMessageConverter.setObjectMapper(new JacksonObjectMapper());
       //将上面的消息转换器对象追加到mvc框架转换器集合中
        converters.add(0,mappingJackson2HttpMessageConverter);
    }
}
